1976 Issues
Pick# 45
a. Serial # prefix without serifs. Chinese printing.
b. Serial # prefix with serifs. Crossbar of 4 is thicker than bottom serif. (1st European printing).
c. Serial # prefix with serifs. Crossbar of 4 is same thickness as bottom serif. (2nd European printing).
s1. Red overprint: SPECIMEN with all zeros serial #.
s2. Red overprint: SPECIMEN with normal serial #.
s3. Large blue overprint: SPECIMEN on face. Black overprint: E PRANUESNHME on back.